Power head



FIG. 1 is a front perspective view of a power head showing our new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a right side elevational view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a rear perspective view thereof. 

CLAIM What is claimed is the ornamental design for a power head, as shown and described. 